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Exploiting double opportunities for latency-constrained content propagation in wireless networks

Published: 01 April 2016 Publication History

Abstract

In this paper, we focus on a mobile wireless network comprising a powerful communication center and a multitude of mobile users. We investigate the propagation of latency-constrained content in the wireless network characterized by heterogeneous (time-varying and user-dependent) wireless channel conditions, heterogeneous user mobility, and where communication could occur in a hybrid format (e.g., directly from the central controller or by exchange with other mobiles in a peer-to-peer manner). We show that exploiting double opportunities, i.e., both time-varying channel conditions and mobility, can result in substantial performance gains. We develop a class of double opportunistic multicast schedulers and prove their optimality in terms of both utility and fairness under heterogeneous channel conditions and user mobility. Extensive simulation results are provided to demonstrate that these algorithms can not only substantially boost the throughput of all users (e.g., by 50% to 150%), but also achieve different consideration of fairness among individual users and groups of users.

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Published In

cover image IEEE/ACM Transactions on Networking
IEEE/ACM Transactions on Networking  Volume 24, Issue 2
April 2016
646 pages
ISSN:1063-6692
Issue’s Table of Contents

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IEEE Press

Publication History

Published: 01 April 2016
Published in TON Volume 24, Issue 2

Author Tags

  1. content distribution networks
  2. mobile nodes
  3. multicast scheduling
  4. opportunistic communications
  5. wireless data networks

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